5264841183
access to POSIX Semaphores: mac_init_posix_sem() Initialize label for POSIX semaphore mac_create_posix_sem() Create POSIX semaphore mac_destroy_posix_sem() Destroy POSIX semaphore mac_check_posix_sem_destroy() Check whether semaphore may be destroyed mac_check_posix_sem_getvalue() Check whether semaphore may be queried mac_check_possix_sem_open() Check whether semaphore may be opened mac_check_posix_sem_post() Check whether semaphore may be posted to mac_check_posix_sem_unlink() Check whether semaphore may be unlinked mac_check_posix_sem_wait() Check whether may wait on semaphore Update Biba, MLS, Stub, and Test policies to implement these entry points. For information flow policies, most semaphore operations are effectively read/write. Submitted by: Dandekar Hrishikesh <rishi_dandekar at sbcglobal dot net> Sponsored by: DARPA, McAfee, SPARTA Obtained from: TrustedBSD Project
60 lines
2.2 KiB
C
60 lines
2.2 KiB
C
/*-
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* Copyright (c) 2002 Alfred Perlstein <alfred@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _POSIX4_KSEM_H_
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#define _POSIX4_KSEM_H_
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#ifndef _KERNEL
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#error "no user-servicable parts inside"
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#endif
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#include <sys/condvar.h>
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#include <sys/queue.h>
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struct kuser {
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pid_t ku_pid;
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LIST_ENTRY(kuser) ku_next;
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};
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struct ksem {
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LIST_ENTRY(ksem) ks_entry; /* global list entry */
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int ks_onlist; /* boolean if on a list (ks_entry) */
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char *ks_name; /* if named, this is the name */
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int ks_ref; /* number of references */
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mode_t ks_mode; /* protection bits */
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uid_t ks_uid; /* creator uid */
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gid_t ks_gid; /* creator gid */
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unsigned int ks_value; /* current value */
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struct cv ks_cv; /* waiters sleep here */
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int ks_waiters; /* number of waiters */
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LIST_HEAD(, kuser) ks_users; /* pids using this sem */
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struct label *ks_label; /* MAC label */
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};
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#endif /* !_POSIX4_KSEM_H_ */
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